WO2021003972A1 - Outil de frappe pour élément de fixation - Google Patents

Outil de frappe pour élément de fixation Download PDF

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Publication number
WO2021003972A1
WO2021003972A1 PCT/CN2019/122032 CN2019122032W WO2021003972A1 WO 2021003972 A1 WO2021003972 A1 WO 2021003972A1 CN 2019122032 W CN2019122032 W CN 2019122032W WO 2021003972 A1 WO2021003972 A1 WO 2021003972A1
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WO
WIPO (PCT)
Prior art keywords
striker
transmission member
striking tool
driving wheel
tooth
Prior art date
Application number
PCT/CN2019/122032
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English (en)
Chinese (zh)
Inventor
常凤智
高冬生
朱清华
王爱国
徐朋
Original Assignee
南京腾亚精工科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 南京腾亚精工科技股份有限公司 filed Critical 南京腾亚精工科技股份有限公司
Publication of WO2021003972A1 publication Critical patent/WO2021003972A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power

Definitions

  • the invention relates to a fastener striking tool, in particular to an electric gas spring nail gun, belonging to the technical field of electric tools.
  • This type of nail gun is driven by a motor to drive the missing tooth to give way to the drive wheel to rotate, thereby lifting the striker engaged with it, and accumulating energy through the air in the cylinder compressed by the piston.
  • the driving wheel of the electric gas spring nail gun reaches the toothless state and is out of engagement with the firing pin, the compressed air causes the piston to drive the firing pin released by the driving wheel to move quickly to complete the nailing action.
  • the driving wheel enters the lifting meshing state again, and the next nailing cycle is performed. Since these electric gas spring nail guns come from electric energy, they have good control performance and are relatively safe.
  • the purpose of the present invention is to provide a fastener striking tool with a simple and reliable structure, which can effectively avoid the out-of-control action of the firing pin due to jamming in view of the above-mentioned problems in the prior art, thereby ensuring convenient and safe use.
  • the basic technical solution of the fastener striking tool of the present invention is: an energy storage mechanism composed of a cylinder in a housing and a piston, the piston is fixedly connected to the firing pin extending to the gun nozzle, and one of the cylinders A handle with a battery pack is arranged on the side, a nail magazine is arranged on one side of the gun mouth, and a lifting mechanism is arranged between the handle and the nail magazine; the lifting mechanism contains missing teeth that can force the firing pin to move and compress the piston Give way to a driving wheel, which is connected in transmission with a motor provided by the battery pack;
  • the transmission member has a position to mesh with the driving wheel before the driving wheel enters a state of forcing the striker to move;
  • the transmission member has a constraining structure that is combined with the striker when the drive wheel enters a state of forcing the striker to move;
  • the transmission member has a tendency to return to the advance engagement position under elastic action.
  • the transmission parts on the looper will reach the pre-engagement position due to the elastic tendency, and the engagement of the next drive cycle of the drive wheel will begin.
  • the striker is driven to the correct forced movement position through its combination with the movement direction of the striker pin to the correct forced movement position; in the meshing transmission process after the driving wheel, the forced movement of the striker pin is compressed by the piston The air in the cylinder completes energy storage. After that, when the driving wheel reaches the state of missing teeth, release the firing pin to move quickly to drive nails.
  • the present invention is further: the toothless concession drive wheel is a toothless concession drive wheel of a clip gear structure, a compression spring limit ring is formed near the piston, and a compression spring is fitted on the front end of the compression spring limit ring And a tubular transmission piece against the compression spring.
  • the present invention is further: the two sides of the transmission member are respectively provided with spaced protrusions which can mesh with the two clip gears of the driving wheel.
  • the present invention is further: the striker is thin in front and thick in the rear to form an axial shoulder, and the outer end of the transmission member is provided with a necking shoulder to form a movement direction binding restriction structure.
  • the present invention is further: the advance engagement position is determined by the free extension state of the compression spring.
  • the present invention is still further: the toothless concession drive wheel is a toothless concession drive wheel with a clip tooth pin structure; the middle and rear part of the striker has a limit shoulder; the limit shoulder is nested before Install the slider-shaped transmission.
  • the transmission member contains tooth pins spaced apart between the two clips, and the tooth pin also has leading teeth located on the periphery of the two clips; the middle section of the striker has the tooth pin Engaging meshing teeth; a sliding groove is opened on one side of the transmission member adjacent to the striker, and two sides of the sliding groove are respectively provided with convex teeth that can mesh with the preceding tooth.
  • the present invention is still further: one end of the sliding block-shaped transmission member and the limit shoulder of the striker form a movement direction binding restriction structure.
  • the present invention is still further: the rib on the side of the transmission member away from the firing pin and the guide groove at the rear end of the gun nozzle constitute a moving pair, and the rear part of the gun nozzle and the transmission member are respectively hooked on both ends of the tension spring.
  • the present invention is still further: the advanced engagement position is determined by the free contraction state of the tension spring.
  • Fig. 1 is a schematic diagram of the meshing interference of the gear pin drive in the prior art.
  • Fig. 2 is a schematic diagram of meshing interference of gear transmission in the prior art.
  • Embodiment 3 is a schematic cross-sectional structure diagram of Embodiment 1 of the present invention.
  • Fig. 4 is a schematic diagram of a three-dimensional exploded structure of the lifting mechanism of the embodiment of Fig. 3.
  • FIG. 5 is a schematic diagram of the structure of the advance engagement position of the lifting mechanism in the embodiment of FIG. 3.
  • FIG. 6 is a schematic diagram of the three-dimensional structure of FIG. 5.
  • FIG. 7 is a schematic diagram of the structure of the lifting mechanism with a cylinder in FIG. 5.
  • FIG. 8 is a schematic diagram of the three-dimensional structure of FIG. 7.
  • FIG. 9 is a schematic diagram of the structure of the advance engagement position of the lifting mechanism in the embodiment of FIG. 3.
  • Fig. 9 is a schematic structural diagram of the lifting mechanism in the embodiment of Fig. 3 in a state where the striker is released.
  • FIG. 10 is a schematic diagram of the three-dimensional structure of FIG. 7.
  • Fig. 11 is a schematic diagram of a three-dimensional exploded structure of a lifting mechanism according to the second embodiment of the present invention.
  • Fig. 12 is a schematic diagram of the structure of the advance engagement position of the lifting mechanism in the embodiment of Fig. 11.
  • Fig. 13 is a schematic diagram of the striker of the lifting mechanism of the embodiment of Fig. 11 about to enter the meshing structure.
  • FIG. 14 is a schematic diagram of the disengagement structure of the transmission member of the lifting mechanism of the embodiment of FIG. 11.
  • FIG. 15 is a schematic diagram of the reset structure of the transmission member of the lifting mechanism in the embodiment of FIG. 11.
  • FIG. 16 is a schematic diagram of the structure that the striker of the lifting mechanism of the embodiment of FIG. 11 is about to be out of engagement.
  • Fig. 17 is a schematic diagram of the structure of the lifting mechanism in the embodiment of Fig. 11 after the firing pin is released and struck.
  • the basic structure of the fastener striking tool of this embodiment is shown in Figure 3.
  • the rear end of the housing 1 is equipped with an energy storage mechanism 2 composed of a cylinder 2-2 and a piston 2-1.
  • the piston 2-1 and the nozzle 3 extend to The firing pin 4 is firmly connected.
  • the lower side of the cylinder 2-2 is provided with a handle 5 with a battery pack 5-1.
  • the lower side of the gun nozzle 3 is provided with a nail magazine 6 for arranging nails.
  • the upper side of the handle 5 and the nail magazine 6 is provided.
  • the lifting mechanism 7 and the motor 8 and the reduction transmission mechanism 8-1 located at the lower part.
  • the specific structure of the lifting mechanism 7 is shown in Fig. 4, which is similar to the prior art in that it contains a toothless geared drive wheel 9 which can force the striker 4 to move and compress the piston 2-1.
  • the wheel shaft and the electric motor 8 provided by the battery pack 5-1 are drivingly connected through a reduction transmission mechanism 8-1.
  • the lifting mechanism 7 also includes a tubular transmission member 12 looped on the striker 4.
  • the specific looper structure is that the striker 4 forms a compression spring limit ring 4-2 adjacent to the piston 2-1, and the front end of the compression spring limit ring 4-2 is fitted with a compression spring 11 and a tubular transmission member 12 against the compression spring 11. .
  • the transmission member 12 has a constraining structure in conjunction with the movement direction of the striker 4 when the driving wheel 9 enters the state of forcing the striker 4 to move.
  • the striker 4 is thin in front and thick in the rear to form an axial shoulder 4-1.
  • the outer end of the transmission member 12 has a necking shoulder 12-2.
  • the necking stop Shoulder 12-2 contact the axial shoulder 4-1 to eliminate the distance t and form a movement direction binding constraint, the driving wheel 9 enters a state of forcing the firing pin 4 to move, which will drive the firing pin to be forced to move.
  • the piston compresses the air in the cylinder to complete Energy storage.
  • the transmission member 12 has a tendency to return to the pre-engagement position under the action of the compression spring 11, that is, when the driving wheel 9 is in the state of missing teeth and the transmission member 12 is not engaged and subjected to force, it will be in a waiting state determined by the free extension of the compression spring 11 The driving wheel 9 is engaged at the advanced engagement position.
  • the driving wheel 9 turns to the missing tooth position shown in Figures 9 and 10, and the compressed air in the cylinder 2-2 causes the piston to drive the released striker 4 to move quickly to complete the nailing action; Because the compression spring 11 is stretched, it returns to the pre-engagement position, and waits for the next cycle to be engaged.
  • the above process can always ensure the barrier-free meshing relationship between the driving wheel and the transmission part, thereby ensuring the stability and reliability of the air energy storage stroke of the striker, and completely avoiding the interference of meshing. It prevents the out-of-control movement of the firing pin and ensures safe operation.
  • the basic structure of the fastener striking tool of this embodiment is the same as that of the first embodiment, except that the rear end of the housing 1 is equipped with an energy storage mechanism 2, the piston 2-1 is fixedly connected with the firing pin 4 extending to the nozzle 3, and the cylinder 2 -2 is provided with a handle 5 on the underside, a nail box 6 on the underside of the gun nozzle 3, and a lifting mechanism 7 and a motor 8 and a reduction transmission mechanism 8-1 between the handle 5 and the nail box 6;
  • the lifting mechanism 7 includes a toothless geared drive wheel that can force the striker to move and compress the piston 2-1.
  • the wheel shaft of the drive wheel and the electric motor 8 provided by the battery pack 5-1 are drivingly connected through a reduction transmission mechanism 8-1.
  • the change is that the missing tooth drive wheel is a clip tooth pin structure.
  • the missing tooth drive wheel; the middle and rear part of the striker has a limit shoulder; nested installation before the limit shoulder Slider-shaped transmission parts.
  • the tooth-missing concession drive wheel 9' is a clip tooth pin structure, and the main part is composed of five tooth pins 9-2 spaced apart in a predetermined angular area between the two clips, and the tooth pin 9 Before -2, there are three pairs of leading teeth 9-1 on the periphery of the two clips; the middle section of the striker 4'has five meshing teeth 4-3 that can respectively mesh with the five tooth pins 9-2 of the driving wheel 9'.
  • the lifting mechanism 7 includes a transmission member 12' looped on the striker 4'.
  • the transmission member 12' is in the shape of a sliding block.
  • a sliding groove 12-3 is formed on the side adjacent to the striker 4', and a rib 12-4 is formed on the side away from the striker 4'.
  • the slider-shaped transmission member 12' is looped on the striker 4'in such a way that the sliding groove 12-3 is nested between the engaging teeth 4-3 of the striker 4'and the limit shoulder 4-1'.
  • the two sides of the sliding groove 12-3 of the transmission member 12' are respectively provided with four spaced convex teeth 12-1' which can mesh with the leading teeth 9-1 on both sides of the drive wheel 9'of the clip tooth pin structure.
  • the transmission member 12' has a constraining structure in conjunction with the movement direction of the striker 4'when the driving wheel 9'enters the state of forcing the striker 4'to move.
  • the middle and rear part of the striker 4' has a limit shoulder 4-1'; when the driving wheel 9'drives the transmission member 12' to move to one end contact with the limit shoulder 4-1' to eliminate the distance t, After forming the movement direction binding constraint, the driving wheel 9'enters a state of forcing the striker 4'to move, which will drive the striker to move by force, and the air in the cylinder is compressed by the piston to complete energy storage.
  • the transmission member 12' has a tendency to return to the advance engagement position under the action of elasticity. Because the rib 12-4 of the transmission member 12' and the guide groove 3-1 at the rear end of the gun nozzle 3 constitute a moving pair, and the two ends of the tension spring 11' are respectively hooked on the rear of the gun nozzle 3 and the transmission member 12', Therefore, when the driving wheel 9'is at the leading tooth 9-1 disengaged from the transmission member 12' (see Figure 14), the transmission member 12' will be in the leading position to be engaged with the driving wheel 9'determined by the free contraction of the tension spring 11' In the engaged position (see FIG. 15), the striker 4'shown in FIG. 16 is forced to move to compress the air in the cylinder, and in the process of being released and nailed as shown in FIG. 17, it remains in the advanced engagement position.
  • this embodiment not only has the advantages of the first embodiment, but also has a major feature: the transmission member 12' is engaged in advance to ensure that the meshing teeth 4-3 of the striker 4'reach the driving wheel. After the 9'tooth pin 9-2 is in the correct meshing position, it is designed to disengage in time, which not only avoids the rotation energy of the driving wheel 9'from being consumed on the elastic member, but all is used for compressed air accumulation; it can also prevent the striker from impact Transmission parts cause kinetic energy loss.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

L'invention concerne un outil de frappe pour un élément de fixation, l'outil de frappe comprenant un mécanisme d'accumulation d'énergie (2) constitué d'un cylindre (2-2) et d'un piston (2-1), le piston (2-1) étant relié de manière fixe à un percuteur (4) se prolongeant dans un pistolet d'injection (3), une poignée (5) avec un bloc-batterie (5-1) est disposé sur un côté du cylindre (2-2), une boîte de clous (6) est disposée sur un côté du pistolet d'injection (3), un mécanisme de levage (7) est disposé entre la poignée (5) et la boîte de clous (6), le mécanisme de levage (7) contient une denture manquante pour le passage d'une roue d'entraînement (9) et la denture manquante pour le passage de la roue d'entraînement (9) est en liaison de transmission avec un moteur électrique (8). L'outil de frappe comporte en outre un élément de transmission (12) disposé de manière mobile autour du percuteur (4), l'élément de transmission (12) étant doté d'une position dans laquelle l'élément de transmission s'engrène avec les dents manquantes et permettant le passage d'une roue d'entraînement (9) à l'avant de la denture manquante et permettant le passage de roue d'entraînement (9) dans un état dans lequel le percuteur (4) est entraîné pour se déplacer, et l'élément de transmission (12) est doté d'une structure pour être en contrainte combinée avec le percuteur (4) lorsque la denture manquante et permettant le passage de roue d'entraînement (9) entre dans l'état dans lequel le percuteur (4) est entraîné pour se déplacer, et l'élément de transmission (12) tend à revenir à la position d'engrènement avancée sous l'action d'élasticité.
PCT/CN2019/122032 2019-07-10 2019-11-29 Outil de frappe pour élément de fixation WO2021003972A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910620829.4A CN110385675B (zh) 2019-07-10 2019-07-10 一种紧固件打击工具
CN201910620829.4 2019-07-10

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WO2021003972A1 true WO2021003972A1 (fr) 2021-01-14

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WO (1) WO2021003972A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN113855131A (zh) * 2021-11-18 2021-12-31 重庆迈科唯医疗科技有限公司 一种带手动复位机构的电动吻合器
CN114161367A (zh) * 2021-12-21 2022-03-11 合肥万致精工科技有限公司 一种安全高效的储气蓄力型射钉枪

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CN110385675B (zh) * 2019-07-10 2022-03-08 南京腾亚精工科技股份有限公司 一种紧固件打击工具
CN114434393B (zh) * 2020-11-06 2023-09-12 苏州宝时得电动工具有限公司 钉枪
CN116697009A (zh) * 2022-02-25 2023-09-05 台州市大江实业有限公司 射钉枪用传动部件、防卡齿组件以及射钉枪
CN114750111B (zh) * 2022-04-22 2022-11-25 四川轻化工大学 一种双气缸电动固钉器

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WO2017056810A1 (fr) * 2015-09-30 2017-04-06 日立工機株式会社 Dispositif d'entraînement
CN205572337U (zh) * 2016-02-03 2016-09-14 刘焱 一种射钉弹的电动击发装置
CN105818099A (zh) * 2016-05-26 2016-08-03 杭州科龙电器工具股份有限公司 一种使用气弹簧的电动钉枪
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113855131A (zh) * 2021-11-18 2021-12-31 重庆迈科唯医疗科技有限公司 一种带手动复位机构的电动吻合器
CN113855131B (zh) * 2021-11-18 2023-08-11 重庆迈科唯医疗科技有限公司 一种带手动复位机构的电动吻合器
CN114161367A (zh) * 2021-12-21 2022-03-11 合肥万致精工科技有限公司 一种安全高效的储气蓄力型射钉枪

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